Always target to complete Physical chemistry first...this carries a lot of marks....inorganic chemistry go for the chapters included in class 12 syllabus first and the organic chemistry chapters in 12th NCERT...

Dear Jabin,

You can check the important chapters in NEET for chemistry below based on previous year analysis

Chemical Bonding- 20 marks

Coordination compounds- 16 marks

d block and f block elements- 8 marks

General organic chemistry-II- 12 marks

Alkyl Hallidee, Alcohal & Ether- 8 marks

Carbonyl compounds- 16 marks

IUPAC & Isomerism- 8 marks

Chemical equilibrium- 8 marks

To check the complete weightage you can refer below link

https://medicine.careers360.com/articles/neet-analysis-2017-resonance-moderate-paper-difficult-biology

Good Luck!!